Crusher



April 1, '1931.

R. c. NEwHous CRUSHER,

Original Filed Sept. 15, 1922 Patented Apr. l7, 1931 ,UNITEDl STATESPATENT OFFICE RAY C. NEWHOUSE, OF WAUWATOSA, WISCONSIN, ASSIGNOR TOALLIS-CHALMERS MANUFACTURING COMPANY, 0F MILWAUKEE, WISCONSIN, ACORPORATION 0F DELAWARE CRUSHER Application filed September 15, 1922,Serial No. 588,401. Renewed-December 22, 1927.

This invention relates in general to improvements in the art of reducingmaterials, and relatesmore specifically to improvements in theconstruction and operation of crushers for reducing substances such asrock, coal and the like.

An object of the invention is to provide la Crusher which is simple inconstruction and efficient in operation.

Some of the more specific objects of the invention are as follows:

To provide a simple and compact Crusher of relatively large capacity.

To provide. an efficient gyratory Crusher operable at high speed.

To provide an improved direct drive for a gyratory Crusher.

To provide simple and efficient means for eliminating vibration in acrusher operatedl at relatively high speed.

To provide a cru-Sher in which the various parts are readily accessibleand in which the relatively frail4 mechanism is protected againstdamage.

' To provide simple andeflicient means for maintaining properlubrication of the Working elements ofa c-rusher.- y

To provide other improved details of crusher construction, which willenhance to a maximum the efficiency of operation'andwhich will reduce toa minimum the cost of construction and of maintenance.

Subject matter relating to the high speed crusher and method, and at onetime claimed herein, 'is claimed in applicantscopending application Ser.No. 7 57,809, filed December 22, 1924.

A clear conception'of anembodiment of the invention and of the operationof a device constructed in accordance therewith, may be had by referringto the drawing accompanying and forming a part of this specification inwhich like reference characters 'designate the same or similar parts ofthe mechanism.

The single figure of the drawing illustrates a central vertical sectionthrough a directconnected motor-driven gyratory crusher.

The gyratory crusher comprises generally a stationary annular crushingelement or concave 3 and a movable crushingelement or head 4 locatedwithin the concave 3, th head 4 being gyratable relatively to theconcave. The concave 3 is supported in a stationary frame 2 while thehead 4 is rigidly attached to a vertical suspension member or hollowshaft 5. The upper extremity of the hollow shaft 5 is provided with aspherical suspension bearing 18 carried by means 0f a spider 16 from thestationary frame 2. The lower extremity of the hollow shaft 5, directlybelow the head 4, is provided with a cylindrical portion which fitswithin the bore of a gyrating device orq eccentric 6. The outer surfaceof the eccentric 6 coacts with bearings in the lower frame 17 which isrigidly attached to the stationary frame 2.

Suitable driving meanssuch as an electric motor 8 is mounted upon asupport 15 carried by the spider 16. The rotor of the motor 8 is directconnected to a drive shaftl 7 through a flexible coupling 14, the lowerend of the drive shaft 7 being keyed or otherwise rigidly attached tothe eccentric 6. With this arrangement of elements it will be noted thatthe shaft 7 and coupling 14 provide a direct mechanical connectionbetween the driv-4 ing motor r8 and the eccentric 6, thev direct drivingconnection passing through but being 'spaced from the interior ofthehollow shaft 5. The drive shaft 7 may be provided with a bearing 22 inthe support 15 adjacent p to the motor, and is disposed concentricrelatively to the concave. s

The driving eccentric 6 is preferably provided with a balance weight 9'secured to the medial portion of thel eccentric by means of a key, asshown'. The balance weight 9 comprises a mass of metal having a borewhich snugly fits the exterior cylindrical surface of the eccentric 6,the center of gravity of the weight 9 being disposed at the side of theaxis of the eccentric remote from `the axis of the eccentric bore. Thehollowshaft 5 which is suspended by means of a spherical suspensionbearing 18, and the axis of which intersects the axis `of the Crusherbelow the the spherical surface of the bearing 18, may also beprovidedwith a counter-balance weight 19 located abo've the suspension bear ing18. The weight 19 is formed `of a cup of the weight 19 are on one sideof the vertical axis of the machine while the center of gravity of thecrushing head 4 and shaft 5` is on the opposite side of the Verticalaxis of the machine. Other counter-balancing means may be provided, andthe balance weights l9, 1'9 are preferably made adjustable in positionin order to secure a perfect counter-balance of the weight of the head.4 and shaft 5 by means of the balancing weights 9, 19. The lowerextremity of the eccentric 6 is operatively connected to the rotor of agear pump 20 which is adapted to force oil through the pipe 12 andthrough the branch pipe 13, to the upper portion of the crusher. Thepipe 13 leads directly to the bearing 22 andthe pipe 12 leads to an oilnozzle attached to the lower portion of the bearing 22 and directeddownwardly through the hollow shaft 5. A pipe 10 leading from theexterior of the lower portion of the eccentric 6 communicates with anordinary oil cooler which in turn communicates with the suction side ofthe pump 20 through a suitable pipe 11.

During normal operation of the crusher the motor 8 is being operated torotate the eccentric 6 at high speed by virtue of the direct connectingdrive shaft 7 As the eccentric 6 rotates, the hollow sliaft 5.and thecrushing head 4 are gyrated wi y(hin the concave 3. The materialadmitted downwardly to the space between the head 4 and concave 3-isreduced by virtue of the relative gyration of the 'I crusher elementsand is eventually discharged through the annular space between the lowerportions of the head 4 and the concave 3. Due to the high speed ofoperation and also due to the fact that the head 4 and shaft 5 are ofconsiderable mass, it is necessary in order to eliminate vibration ofthe supporting structures, to provide balancing means such as thecounterbalancing weights 9 19.

While the crusher is in operationsthe pump 20 is acting to produce acontinuous circulation of oil through the pipes 12, 13 to the bearing 22and to the interior 'of the eccen tric 6 through the hollow shaft 5. Theoil admitted to the interior of the eccentric 6 passes upwardly alongthe bearing surfaces between the eccentric and the shaft to the chamberabove th'e eccentric. By virtue of the seal provided between the shaft 6and the adjacent stationary head 4, the oil admitted to the chamberabove frame directly below the the eccentric is forced to passdownwardly along the outer bearing surface of the eccentric until thethrust bearing at the lower extremity of the eccentric 6 is reached.-After reaching this thrust bearing' the oil Hows through the pipe 10 tothe cooler and from the cooler back to the pump 20 through the pumpinlet pipe 11.

It will be noted that by operating the crusher at the speed ofthe motor8, a relatively small crusher of enormous capacity is produced. Thedirect drive from the motor 8 to the eccentric 6 simplifies theconstruction as compared to prior Crushers of this type employing speedreducing gearing between the eccentric and the driving motor. Theeccentric 6 is completely enclosed and is thereby protected against theadmission of grittyA substances. The motor 8`may be located atl somedistance above the crushing chamber being thus protected against injurydue to the entrance of gritty substances.. All parts of the crusher arereadily accessible for inspection and adjustment and theoperation of thedevice is entirely automatic.

It should be understood that it is not desired to limit the invention tothe exact details of construction and of operation herein shown anddescribed, for various modificationsk within the scope of the claims mayoccur to persons skilled in the art,

It is claimed and desired to secure by Letters Patent:

1. In combination, a crusher comprisingl relatively gyratable crushingelements having adjacent feed and discharge ends, a rotary member forrelatively gyrating said elements, said member being'located at one ofsaid ends of said elements, driving means located at the other of saidends of said elements, and a rotary motion transmitting-connectionpositively connecting said driving means and said member.

2. In combination, a crusher comprising relatively gyratable crusherelements, a rotary eccentric forrelatively gyrating said elements, saideccentric being located below said elements, means locatedabove saidelements for rotating said eccentric to produce relative gyration ofsaid elements, and a direct mechanical connection between said eccentricand said eccentric rotating means, said connection extending vdownwardly through one of said elements.

3. ln combination, a crusher comprising concaves and a\head gyratablewithin said concaves, an eccentric for gyrating said head, saideccentric being located below and closely adjacent to said head, a motorlocated above s'aid head for rotating said eccentric to gyrate saidhead,and a direct mechanical connection between said motor and said eccentricextending downwardly through said head.

4. In combination, a crusher comprising concaves and a head gyratablewithin said concaves, a rotary member for gyrating said head, saidmember being located below and closely adjacent to said head, a highspeed motor located above said head for rapidly rotating said member topositively gyrate said head, and a direct mechanical connection betweensaid motor and said member.

5. In combination, a Crusher comprising a stationary element and amovable element, a hollow member supporting said movable ele- 4 ment,bearings for said member located on opposite sides of said movableelement, means` associated with one of'said bearings for moving saidmovable element relatively to saidl stationary element, and drivingmeans for said movingmeans extending through said hollow member.

6. In combination, a-crusher head, meansfor suspending said head fromabove, and means for positively gyrating said head with 4a ixed radiusof gyration, said gyrating means comprising an element extendingdownwardly into said head and functioning independently of saidsuspension means. v

7. In combination, a crusher head, hollow suspension means for said headlocatedthereabove, means comprising an eccentric for positively gyratingsaid head, and a driving element for said eccentric extendingdownwardly-through and functioning independently of said suspensionmeans.

8. In combination, a crusher head, hollow suspension means for said headlocated .thereabove, and means including an eccentric and a shaft forrotating said eccentric extending through said suspension means, saidshaft functioning independently of said suspension means.

9. In combination, a concave, a crusher head located within saidconcave, suspension means for said head located entirely above saidconcave, means for positively gyrating said head with Aa fixed radius ofgyration, and driving means for said yrating means' comprisingan elementexten ing downwardly into said head and functioning independently ofsaid suspensionmeans.

10. In combination, a concave, a hollow crusher head located within saidconcave, universal suspension means for said head located above saidconcave, and means comprising a driving shaft extending through saidsuspension means for positively gyrating said head with a fixed radiusof gyration, said drivingshaft functioning independently of saidsuspension means. l

11. In combination, a concave, a hollow Crusher head located within saidconcave, universal suspensionmeans for/said head located above saidconcave, an eccentric located below said head, and a driving shaft forsaid i eccentric extending through said suspension means, said drivingshaft functioning independently of said suspension means.

coiicaves, an eccentric coacting with said head,

said eccentric being located below said head, a high speed motor locatedabove said head, and a direct mechanical connection between said motorand said eccentric..

14. In combination, a crusher comprising concaves'and a. head gyratablewithin said concaves, an eccentric coa'cting with saidhead, saideccentric being located below said head, a high speed motor locatedabove said head, anda direct mechanical connection between said motorand said eccentric passing centrally through said head. 1

15. In combination, a Crusher comprising concaves and a head gyratablewithin said concaves, a hollow shaft for supporting said head, aneccentric cooperating with said shaft to gyrate said head, saideccentric being located below and closely adjacent to said head, a highspeed motor located above said head, and a direct mechanical connectionbetween said motor and said eccentric passing downwardly through saidhollow shaft.

16. In a cruslier, inner and outer crushing members 'cooperating to forma crushing chamber, means for relatively gyrating said members, andweights associated with said members on opposite sides of said chamberfor co-unterbalancing the unbalanced forces set up in said members dueto said gyration.

17. In combination, a crusher comprising concaves and a head gyi'atablewithin saidl concaves, a rotary eccentric for positively gyrating saidhead, said eccentric being located below said head, a weight associatedand revolving with said eccentric for counterbalancing the unbalancedforces set up in said head and said eccentric, a, high speed motorlocated above said headyand a direct mechanical connection betweeii saidmotor and said eccentric.

18,. In combination, a cruslier comprising Y concaves and a headgyratable within said concaves, a rotary eccentric 'for positivelygyrating said head, balancing means for eliminating vibration, saidmeans comprising a balance weight associated and revolving with saideccentric for counterbalancing the unbalanced forces set up in said headand said eccentric, a high speed motor, and a direct mechanicalconnection between said motor and said eccentric.

19. In a Crusher, relatively gyratable crushing members between whichmaterial advances by gravity, a rotary eccentric for positivelyrelatively gyrating said members at a high rate of speed, and balancingmeans for eliminating vibration, said means comv prising a balanceweight associated and revolving with said eccentric for counterbalancingthe unbalanced forces set up in said members d ue to said gyration.

20, In a crusher, relatively gyratable crushing members between whichmaterial advances by gravity, means for positively relatively gyratingsaid members at a high rate of speed, and balancing means foreliminating vibration, said means comprising a balance weight forcounterbalancing the unbalanced forces set up in said members due tosaid gyration. p

21. In a crusher, relatively gyratable crushing members between whichmaterial advances by gravity, a rotary eccentric for positivelyrelatively gyrating said members at ya high rate of speed, and a weightassociated and revolving with said eccentric for counterbalancing theunbalanced forces set up in said members due to said gyration, saideccentric being endwise removable from association with said weight.

22. Ina crusher, relatively gyratable inner and outer crushing members,a rotary eccentric for positively gyrating said inner crushing member,said eccentric comprising a member having a circular outer bearingsurface and an eccentric bore extending longitudinally of said memberwithin said surface, and

a counterbalance weight secured to said eccentric and disposedeccentrically thereof on the side of the axis of-said bearing surfaceopposite to the axis of said bore.

' 23. In combination, a crusher comprising concave and a head gyratablewithin said concaves, a rotary eccentric disposed closely adjacent tosaid head for positively gyrating the same, said eccentric comprising amember having a circular outer bearing surface and an eccentric boreextending longitudinally of said member within said surface, and acounterbalance weight secured to said eccentric and disposedeccentrically thereof on the side of the axis of said surface remotefrom the axis of said bore.

24. In l.combinatioma crusher comprising concaves and a head gyratablewithin said concaves, a rotary eccentric for positively gyrating saidhead, and balancing means for eliminating vibration, said meanscomprising a balance weight associated and revolving, with saideccentric for counterbalancing thel unbalanced forces set up in saidhead and said eccentric. 1

other and havinga crushing chamber between them, a. rotary eccentric forpositively relatively gyrating said members, andbalancing means foreliminating vibration, said means gyrating said members, and balancingmeans for eliminating vibration, said means comprising a balance weightassoclated and moving with said means for counterbalancmg the unbalancedforces set up in said members due to the gyration thereof.

27. In a crusher, the combination of a stationary crushing member, agyratory crushing member,.said members having axes intersecting at afulcrum point and forming a crushing chamber between them at one sideonly of said fulcrum` point, and balancing means for eliminatingvibration, said means comprising a counterbalance weight on saidgyratory member on the other side of said fulcrum point.

28. In combination, a crusher comprising relatively gyratable crushingelements having adjacent feed and discharge ends, a rotary eccentriccoacting with one of said elements, said eccentric being located at thedischarge ends of said elements, driving means located at the feed endsof said elements, and a rotary motion transmitting connection positivelyconnecting said driving means` and said eccentric. i

29. In combination, a crusher comprising relatively gyratable crushingelements, a rotary member coacting with one of said elements, saidmember being located below said elements, means located above saidelements for rotating said member at high speed to pro-V. ducerap-id'iandpositive relative gyration of said elements, and a directmechanical con-l nection between said member and said rotating means, said connection extending downwardly through one of said elements.

' In testimony whereof, the signature of the inventor is' affixedhereto.

' RAY C. NEVVI'IOUSE.l

